Sensorless Direct Flux and Torque Control for Direct Drive washing machine applications

Switched reluctance motors (SRMs) are known as an economical solution by several unique features such as: simple structure and low cost maintenance. Furthermore, due to the lack of permanent magnet, powerful and economical structure of these types of motors, they are proposed as a good choice for use in household appliances. In this paper, a high power flat-type double-stator SRM with low operating voltage in direct-drive system is introduced. Initially, proportional to the intended application, the acceptable attribute of SRM structure is selected, and was followed by the calculation of the motor design. Next, the magnetic characteristics are analyzed by finite element method (FEM) to determine the efficiency of the motor. Finally, the collection of experimental data is tested to confirm the calculated values and the simulation results and ensure the proper functioning of the obtained collection.

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“…The wash program chosen determines the overall time period of the washing cycle [10][11]. As shown in Fig.…”

Section: Describe the Structure Of Proposed Dssrmmentioning

confidence: 99%

A 12/8 double-stator switched reluctance motor for washing machine application

Asgar

Afjei

Behbahani

et al. 2015

The 6th Power Electronics, Drive Systems &Amp; Technologies Conference (PEDSTC2015)

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“…The main element of the washing machine is the washing unit (drum). The washer drum is driven by an electrical motor that is speed-controlled, usually using a sensorless control scheme [3][4][5][6][7][8][9], minimizing the cost of the electric drive (eDrive). The solutions in the literature use mostly field-oriented control (FOC) with inner current control loops applied to interior permanent magnet motors (IPM) [3,7], a direct-drive surface mount permanent magnet (SMPM) motors [4,8,9] and or induction motors [5].…”

Section: Introductionmentioning

confidence: 99%

“…The solutions in the literature use mostly field-oriented control (FOC) with inner current control loops applied to interior permanent magnet motors (IPM) [3,7], a direct-drive surface mount permanent magnet (SMPM) motors [4,8,9] and or induction motors [5]. A different approach is the direct torque control using PWM (DTC-PWM) applied to a direct-drive SMPM motor, described in [6]. Although each sensorless control solution reported in the literature uses a Energies 2021, 14, x FOR PEER REVIEW is the direct torque control using PWM (DTC-PWM) applied to a direct-d tor, described in [6].…”

Section: Introductionmentioning

confidence: 99%

“…A different approach is the direct torque control using PWM (DTC-PWM) applied to a direct-drive SMPM motor, described in [6]. Although each sensorless control solution reported in the literature uses a Energies 2021, 14, x FOR PEER REVIEW is the direct torque control using PWM (DTC-PWM) applied to a direct-d tor, described in [6]. Although each sensorless control solution reported uses a particular position and speed estimation, it is important to mention torque estimation is usually needed by the washer control.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An eDrive-Based Estimation Method of the Laundry Unbalance and Laundry Inertia for Washing Machine Applications

Martinello¹,

Rubino

Bojoi

2021

Energies

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The estimation of the laundry unbalance and laundry inertia is fundamental in washing machine applications. On the one hand, the estimation and management of the laundry unbalance play a pivotal role in reducing mechanical stress and noise during the spinning phase. On the other hand, the laundry inertia’s estimation, performed at the beginning of the washing cycle, allows for the determination of the proper amounts of water and detergent, the water temperature, and the tumbling time. In this way, good washing performance is obtained, avoiding the waste of energy and resources. Moreover, at the end of the washing cycle, the laundry inertia’s accurate estimation is needed to properly manage the spinning phase. With the aim of optimizing the washing performance, this paper proposes a novel method to estimate the laundry unbalance and laundry inertia. The proposed approach does not require additional sensors, since it uses the already implemented motor control scheme, enhanced by a dedicated position-tracking observer. Experimental results have been carried out on a commercial horizontal-axis direct-drive washer, demonstrating the validity of the proposed solution.

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“…이러한 벡터 제어 기법은 현재 고성능 전동 기 구동시스템에 가장 널리 이용되고 있지만, 고정자 전 류를 이용하여 자속과 토크를 간접적으로 제어하기 때 문에 토크 제어의 동특성 향상에 한계가 있으며 그 구 현이 복잡하다. 이에 비해 직접 토크 제어 기법은 고정 자 쇄교 자속과 토크를 직접 독립적으로 제어하는 기법 으로 우수한 토크 제어의 동특성을 보이며, 위치 정보에 의존하지 않는 센서리스(Sensorless) 구동이 가능하기 때문에 최근 세탁기 구동 등의 고성능 전동기 분야에 그 적용이 늘고 있다 [2][3] . 그림 1은 전통적인 스위칭 테이블 방식의 직접 토크 제어 기법의 블록도를 나타내고 있다 [4] .…”

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Maximum Torque Operating Strategy based on Stator Flux Analysis for Direct Torque and Flux Control of a SPMSM

Kim

2014

The Transactions of the Korean Institute of Power Electronics

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This paper proposes a maximum torque operation strategy for the direct torque control of a surface-mounted permanent-magnet synchronous motor (SPMSM). The proposed method analyzes the available operation region of the stator flux of the SPMSM under voltage and current constraints. Based on this analysis, the optimal stator flux trajectory that yields the maximum torque is obtained across the entire operation region, including constant torque and constant power regions. The proposed strategy is also applicable in the flux-weakening region II operation of the SPMSM, which has no speed limit. The validity of the proposed method is verified through experiments conducted on an 800 W SPMSM drive system.

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Sensorless Direct Flux and Torque Control for Direct Drive washing machine applications

Cited by 13 publications

References 10 publications

A 12/8 double-stator switched reluctance motor for washing machine application

A 12/8 double-stator switched reluctance motor for washing machine application

An eDrive-Based Estimation Method of the Laundry Unbalance and Laundry Inertia for Washing Machine Applications

Maximum Torque Operating Strategy based on Stator Flux Analysis for Direct Torque and Flux Control of a SPMSM

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